Polishing paste for superfinishing of bearing steel, and preparation method and use thereof

Abstract

Provided are a polishing paste for superfinishing a bearing steel, and a preparation method and use thereof. The polishing paste includes the following components: in parts by mass, 8 parts to 10 parts of stearic acid, 10 parts to 15 parts of a white oil, 15 parts to 20 parts of a liquid paraffin, 3 parts to 5 parts of oleic acid, 3 parts to 5 parts of triethanolamine, and 50 parts to 60 parts of polishing abrasives. The disclosure provides a polishing paste for superfinishing of the bearing steel.

What is claimed is: 
     
       1. A polishing paste for superfinishing a bearing steel, comprising the following components: in parts by mass, 8 parts to 10 parts of stearic acid, 10 parts to 15 parts of a white oil, 15 parts to 20 parts of a liquid paraffin, 3 parts to 5 parts of oleic acid, 3 parts to 5 parts of triethanolamine, and 50 parts to 60 parts of polishing abrasives. 
     
     
       2. The polishing paste of  claim 1 , wherein the white oil is selected from the group consisting of 5 # white oil, 7 # white oil, and 10 # white oil. 
     
     
       3. The polishing paste of  claim 1 , wherein the polishing paste comprises the following components: in parts by mass, 10 parts of the stearic acid, 10 parts of 7 # white oil, 20 parts of the liquid paraffin, 5 parts of the oleic acid, 5 parts of the triethanolamine, and 60 parts of the polishing abrasives. 
     
     
       4. The polishing paste of  claim 1 , wherein the polishing abrasives are selected from the group consisting of diamond abrasives, aluminum oxide abrasives, and chromium oxide abrasives. 
     
     
       5. A method for preparing the polishing paste of  claim 1 , comprising the following steps:
 heating the stearic acid until the stearic acid is completely melted into a transparent liquid I, then adding the oleic acid and the liquid paraffin in sequence while stirring, and stirring to be uniform to obtain a solution A; 
 mixing the white oil and the triethanolamine to be uniform to obtain a solution B; and 
 adding the solution B to the solution A, fully stirring and mixing to be uniform at a temperature of 85° C. to 90° C. to obtain a transparent liquid II, then adding the polishing abrasives while stirring to form an emulsion, and finally cooling to form the polishing paste. 
 
     
     
       6. A method for preparing dry media for superfinishing a bearing steel, comprising: mixing the polishing paste of  claim 1  with renewable granular media to obtain the dry media. 
     
     
       7. The method of  claim 6 , wherein the renewable granular media are selected from the group consisting of walnut shells, corncobs, and an olive shells; and
 a mass ratio of the polishing paste to the renewable granular media is 1:20. 
 
     
     
       8. Dry media for the superfinishing of the bearing steel prepared by the method of  claim 6 . 
     
     
       9. The method of  claim 6 , wherein the white oil is selected from the group consisting of 5 # white oil, 7 # white oil, and 10 # white oil. 
     
     
       10. The method of  claim 6 , wherein the polishing paste comprises the following components: in parts by mass, 10 parts of the stearic acid, 10 parts of 7 # white oil, 20 parts of the liquid paraffin, 5 parts of the oleic acid, 5 parts of the triethanolamine, and 60 parts of the polishing abrasives. 
     
     
       11. The method of  claim 6 , wherein the polishing abrasives are selected from the group consisting of diamond abrasives, aluminum oxide abrasives, and chromium oxide abrasives. 
     
     
       12. The dry media for the superfinishing of the bearing steel of  claim 8 , wherein the renewable granular media are selected from the group consisting of walnut shells, corncobs, and an olive shells; and
 a mass ratio of the polishing paste to the renewable granular media is 1:20.